gotosocial/internal/db/bundb/statusbookmark.go
tobi 25a815a8a4
[chore/performance] Avoid unnecessary "uncached" queries (#3265)
* [chore/performance] Avoid unnecessary "uncached" queries

* go fmt
2024-09-02 14:00:17 +02:00

324 lines
9.4 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package bundb
import (
"context"
"errors"
"slices"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/state"
"github.com/superseriousbusiness/gotosocial/internal/util"
"github.com/uptrace/bun"
)
type statusBookmarkDB struct {
db *bun.DB
state *state.State
}
func (s *statusBookmarkDB) GetStatusBookmarkByID(ctx context.Context, id string) (*gtsmodel.StatusBookmark, error) {
return s.getStatusBookmark(
ctx,
"ID",
func(bookmark *gtsmodel.StatusBookmark) error {
return s.db.
NewSelect().
Model(bookmark).
Where("? = ?", bun.Ident("id"), id).
Scan(ctx)
},
id,
)
}
func (s *statusBookmarkDB) GetStatusBookmark(ctx context.Context, accountID string, statusID string) (*gtsmodel.StatusBookmark, error) {
return s.getStatusBookmark(
ctx,
"AccountID,StatusID",
func(bookmark *gtsmodel.StatusBookmark) error {
return s.db.
NewSelect().
Model(bookmark).
Where("? = ?", bun.Ident("account_id"), accountID).
Where("? = ?", bun.Ident("status_id"), statusID).
Scan(ctx)
},
accountID, statusID,
)
}
func (s *statusBookmarkDB) GetStatusBookmarksByIDs(ctx context.Context, ids []string) ([]*gtsmodel.StatusBookmark, error) {
// Load all input bookmark IDs via cache loader callback.
bookmarks, err := s.state.Caches.DB.StatusBookmark.LoadIDs("ID",
ids,
func(uncached []string) ([]*gtsmodel.StatusBookmark, error) {
// Avoid querying
// if none uncached.
count := len(uncached)
if count == 0 {
return nil, nil
}
// Preallocate expected length of uncached bookmarks.
bookmarks := make([]*gtsmodel.StatusBookmark, 0, count)
// Perform database query scanning
// the remaining (uncached) bookmarks.
if err := s.db.NewSelect().
Model(&bookmarks).
Where("? IN (?)", bun.Ident("id"), bun.In(uncached)).
Scan(ctx); err != nil {
return nil, err
}
return bookmarks, nil
},
)
if err != nil {
return nil, err
}
// Reorder the bookmarks by their
// IDs to ensure in correct order.
getID := func(b *gtsmodel.StatusBookmark) string { return b.ID }
util.OrderBy(bookmarks, ids, getID)
// Populate all loaded bookmarks, removing those we fail
// to populate (removes needing so many later nil checks).
bookmarks = slices.DeleteFunc(bookmarks, func(bookmark *gtsmodel.StatusBookmark) bool {
if err := s.PopulateStatusBookmark(ctx, bookmark); err != nil {
log.Errorf(ctx, "error populating bookmark %s: %v", bookmark.ID, err)
return true
}
return false
})
return bookmarks, nil
}
func (s *statusBookmarkDB) IsStatusBookmarked(ctx context.Context, statusID string) (bool, error) {
bookmarkIDs, err := s.getStatusBookmarkIDs(ctx, statusID)
return (len(bookmarkIDs) > 0), err
}
func (s *statusBookmarkDB) IsStatusBookmarkedBy(ctx context.Context, accountID string, statusID string) (bool, error) {
bookmark, err := s.GetStatusBookmark(ctx, accountID, statusID)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return false, err
}
return (bookmark != nil), nil
}
func (s *statusBookmarkDB) getStatusBookmark(ctx context.Context, lookup string, dbQuery func(*gtsmodel.StatusBookmark) error, keyParts ...any) (*gtsmodel.StatusBookmark, error) {
// Fetch bookmark from database cache with loader callback.
bookmark, err := s.state.Caches.DB.StatusBookmark.LoadOne(lookup, func() (*gtsmodel.StatusBookmark, error) {
var bookmark gtsmodel.StatusBookmark
// Not cached! Perform database query.
if err := dbQuery(&bookmark); err != nil {
return nil, err
}
return &bookmark, nil
}, keyParts...)
if err != nil {
return nil, err
}
if gtscontext.Barebones(ctx) {
// no need to fully populate.
return bookmark, nil
}
// Further populate the bookmark fields where applicable.
if err := s.PopulateStatusBookmark(ctx, bookmark); err != nil {
return nil, err
}
return bookmark, nil
}
func (s *statusBookmarkDB) PopulateStatusBookmark(ctx context.Context, bookmark *gtsmodel.StatusBookmark) (err error) {
var errs gtserror.MultiError
if bookmark.Account == nil {
// Bookmark author is not set, fetch from database.
bookmark.Account, err = s.state.DB.GetAccountByID(
gtscontext.SetBarebones(ctx),
bookmark.AccountID,
)
if err != nil {
errs.Appendf("error getting bookmark account %s: %w", bookmark.AccountID, err)
}
}
if bookmark.TargetAccount == nil {
// Bookmark target account is not set, fetch from database.
bookmark.TargetAccount, err = s.state.DB.GetAccountByID(
gtscontext.SetBarebones(ctx),
bookmark.TargetAccountID,
)
if err != nil {
errs.Appendf("error getting bookmark target account %s: %w", bookmark.TargetAccountID, err)
}
}
if bookmark.Status == nil {
// Bookmarked status not set, fetch from database.
bookmark.Status, err = s.state.DB.GetStatusByID(
gtscontext.SetBarebones(ctx),
bookmark.StatusID,
)
if err != nil {
errs.Appendf("error getting bookmark status %s: %w", bookmark.StatusID, err)
}
}
return errs.Combine()
}
func (s *statusBookmarkDB) GetStatusBookmarks(ctx context.Context, accountID string, limit int, maxID string, minID string) ([]*gtsmodel.StatusBookmark, error) {
// Ensure reasonable
if limit < 0 {
limit = 0
}
// Guess size of IDs based on limit.
ids := make([]string, 0, limit)
q := s.db.
NewSelect().
TableExpr("? AS ?", bun.Ident("status_bookmarks"), bun.Ident("status_bookmark")).
Column("status_bookmark.id").
Where("? = ?", bun.Ident("status_bookmark.account_id"), accountID).
Order("status_bookmark.id DESC")
if accountID == "" {
return nil, errors.New("must provide an account")
}
if maxID != "" {
q = q.Where("? < ?", bun.Ident("status_bookmark.id"), maxID)
}
if minID != "" {
q = q.Where("? > ?", bun.Ident("status_bookmark.id"), minID)
}
if limit != 0 {
q = q.Limit(limit)
}
if err := q.Scan(ctx, &ids); err != nil {
return nil, err
}
return s.GetStatusBookmarksByIDs(ctx, ids)
}
func (s *statusBookmarkDB) getStatusBookmarkIDs(ctx context.Context, statusID string) ([]string, error) {
return s.state.Caches.DB.StatusBookmarkIDs.Load(statusID, func() ([]string, error) {
var bookmarkIDs []string
// Bookmark IDs not cached,
// perform database query.
if err := s.db.
NewSelect().
Table("status_bookmarks").
Column("id").Where("? = ?", bun.Ident("status_id"), statusID).
Order("id DESC").
Scan(ctx, &bookmarkIDs); err != nil {
return nil, err
}
return bookmarkIDs, nil
})
}
func (s *statusBookmarkDB) PutStatusBookmark(ctx context.Context, bookmark *gtsmodel.StatusBookmark) error {
return s.state.Caches.DB.StatusBookmark.Store(bookmark, func() error {
_, err := s.db.NewInsert().Model(bookmark).Exec(ctx)
return err
})
}
func (s *statusBookmarkDB) DeleteStatusBookmarkByID(ctx context.Context, id string) error {
_, err := s.db.
NewDelete().
Table("status_bookmarks").
Where("? = ?", bun.Ident("id"), id).
Exec(ctx)
if err != nil {
return err
}
s.state.Caches.DB.StatusBookmark.Invalidate("ID", id)
return nil
}
func (s *statusBookmarkDB) DeleteStatusBookmarks(ctx context.Context, targetAccountID string, originAccountID string) error {
if targetAccountID == "" && originAccountID == "" {
return errors.New("DeleteBookmarks: one of targetAccountID or originAccountID must be set")
}
q := s.db.
NewDelete().
TableExpr("? AS ?", bun.Ident("status_bookmarks"), bun.Ident("status_bookmark"))
if targetAccountID != "" {
q = q.Where("? = ?", bun.Ident("status_bookmark.target_account_id"), targetAccountID)
defer s.state.Caches.DB.StatusBookmark.Invalidate("TargetAccountID", targetAccountID)
}
if originAccountID != "" {
q = q.Where("? = ?", bun.Ident("status_bookmark.account_id"), originAccountID)
defer s.state.Caches.DB.StatusBookmark.Invalidate("AccountID", originAccountID)
}
if _, err := q.Exec(ctx); err != nil {
return err
}
if targetAccountID != "" {
s.state.Caches.DB.StatusBookmark.Invalidate("TargetAccountID", targetAccountID)
}
if originAccountID != "" {
s.state.Caches.DB.StatusBookmark.Invalidate("AccountID", originAccountID)
}
return nil
}
func (s *statusBookmarkDB) DeleteStatusBookmarksForStatus(ctx context.Context, statusID string) error {
q := s.db.
NewDelete().
TableExpr("? AS ?", bun.Ident("status_bookmarks"), bun.Ident("status_bookmark")).
Where("? = ?", bun.Ident("status_bookmark.status_id"), statusID)
if _, err := q.Exec(ctx); err != nil {
return err
}
s.state.Caches.DB.StatusBookmark.Invalidate("StatusID", statusID)
return nil
}